CN202325625U - Negative-pressure type drilling hole dust catcher - Google Patents
Negative-pressure type drilling hole dust catcher Download PDFInfo
- Publication number
- CN202325625U CN202325625U CN 201120488908 CN201120488908U CN202325625U CN 202325625 U CN202325625 U CN 202325625U CN 201120488908 CN201120488908 CN 201120488908 CN 201120488908 U CN201120488908 U CN 201120488908U CN 202325625 U CN202325625 U CN 202325625U
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- core tube
- dust
- drilling rod
- rod sleeve
- pressure generator
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Abstract
The utility model relates to a negative-pressure type drilling hole dust catcher comprising a negative-pressure generator and a dust conveying pipe with a drilling rod sleeve; the negative-pressure generator comprises a core cylinder and an external cylinder coaxially sleeved on the core cylinder, one end of the dust conveying pipe is connected to the rear end of the negative-pressure generator in a sealed way, a set included angle is arranged between a center line at the other end of the dust conveying pipe and the axis of the negative-pressure generator, the drilling rod sleeve is penetrated in the pipe wall at the rear side of the dust conveying pipe and is coaxial with the negative-pressure generator, and the outer wall surface of the drilling rod sleeve is in seal fit with the dust conveying pipe; and the front end of the external cylinder is provided with an inner turning edge, an airflow channel which is provided with an air inlet and an air nozzle for spraying airflow backwards to the inside of the core cylinder is arranged between the front end surface of the core cylinder and the rear side surface of the inner turning edge, and the inner wall surface of the core cylinder is provided with a flow guiding surface for guiding the airflow sprayed from the air nozzle between the outer wall surface of the drilling rod sleeve and the inner wall surface of the dust conveying pipe. The problem of poor sealing effect of a part, for a drilling rod to pass through, of the traditional drilling hole dust catcher, is solved.
Description
Technical field
The utility model relates to down-hole drilling and uses aid, especially a kind of suction type aperture grit arrestor.
Background technology
When in the coal seam, holing; Can produce a lot of dust at the hell downwind side when using wind power slag-discharging, during especially soft, that pulverized coal particle is very thin coal bed drilling operation, can produce amounts of dust in the coal seam; Be full of the entire job scene, even in the whole tunnel that can permeate.Not only threaten and influence the workman of field operation, other workmans to operation in same tunnel also cause very big influence simultaneously.
In order to address the above problem; Application number is that 201010601601.3 Chinese patent discloses a kind of colliery with intensive shallow bore hole grit arrestor; Said colliery comprises disposal box with intensive shallow bore hole grit arrestor, and both sides are provided with corresponding drilling rod import and drilling rod outlet before and after the said disposal box, and both sides are provided with dedusting mouth and slag-drip opening up and down; Said drilling rod exit is provided with sleeve, and said dedusting mouth place is provided with spray nozzle.When said grit arrestor is worked; The front end of sleeve, promptly the end away from said disposal box embeds rib, and drilling rod is successively through beginning to creep into rib after said drilling rod import and the drilling rod outlet; Thereby the dust that produces in the drilling process is imported in the disposal box through said sleeve; Then dust is sprayed, finally discharge, to reach the depositing dust purpose through said slag-drip opening through said spray nozzle.
Certain depositing dust effect has in use been played with intensive shallow bore hole grit arrestor in above-mentioned colliery; But still there are some problems: 1) because the drilling rod afterbody that use in the colliery mostly is triangle; Therefore conventional hermetically-sealed construction can't be set in the drilling rod import department of said disposal box; And the spray effect of described spray nozzle is limited; Therefore can't the dust that produce in the drilling process fully be drenched, in the process of rod boring, still having the part dust " to escape from " described disposal box through said drilling rod import department influences surrounding environment, promptly can't realize the sealing with the drilling rod cooperation place; 2) said slag-drip opening place does not have the dust-break device, and the slag-drip opening place often becomes the outlet that dust is blown out; 3) owing to be to adopt said spray nozzle depositing dust, the depositing dust medium is a water, and the foreign material such as dregs that therefore produce in after treatment dust (main component is a coal) and the drilling process are mingled in one and can't realize recycling; In addition, down-hole water intaking also comparatively difficulty and water after pollution caused by coal dust, can't realize recycle, this also makes above-mentioned colliery more inconvenient with the use of intensive shallow bore hole grit arrestor.
Summary of the invention
The purpose of the utility model is to provide a kind of suction type aperture grit arrestor, to solve the problem of dustproof weak effect that is used to supply the position that drilling rod penetrates of existing aperture grit arrestor.
In order to address the above problem; The suction type aperture grit arrestor of the utility model adopts following technical scheme: a kind of suction type aperture grit arrestor; Comprise negative pressure generator and have the dust carrier pipe of drilling rod sleeve; Said negative pressure generator comprises core tube and the coaxial peripheral urceolus of said core tube that is located in; One end of said dust carrier pipe is sealedly attached to the rear end of said core tube or urceolus; Have the setting angle between the axis of the center line of the other end and drilling rod sleeve, said drilling rod sleeve be threaded onto on the rear side tube wall of dust carrier pipe and with the coaxial setting of core tube of negative pressure generator, the outside wall surface of drilling rod sleeve and dust carrier pipe are sealed and matched; In having, the front end of urceolus turns edge; The front end face of core tube and said in be provided with gas channel between the trailing flank that turns edge, said gas channel has air inlet port and with being used for air-flow is sprayed onto in the core tube backward and makes the gas of ejection before arriving the drilling rod sleeve, form outlet section and the puff prot that attaches the wall air-flow, the internal face of core tube is provided with the drainage face between the internal face of outside wall surface and dust carrier pipe that the air-flow that is used for said puff prot ejection causes the drilling rod sleeve.
The front end of said negative pressure generator is fixed with control of dust deslagging cover, and said control of dust deslagging cover is pre-large post-small infundibulate.
The adjoiner of the internal face of the internal face of said core tube and dust carrier pipe seamlessly transits, and the endoporus of core tube is pre-small post-large bellmouth orifice, and said drainage face is formed by the hole wall of said bellmouth orifice.
Described urceolus screw fit is on described core tube.
Said dust carrier pipe is provided with away from an end of said negative pressure generator and is used for the dust discharge joint that is connected with dust arrester.
Coaxially in the said drilling rod sleeve be equipped with fire-retardant cover.
The front end of said core tube is provided with and is used for the air-flow that sprays in the said gas channel is caused the drainage cambered surface on the core tube internal face; Turning edge in said is provided with the cambered surface that cooperates of and matched in clearance identical with said drainage cambered surface, and described gas channel is by said drainage cambered surface and cooperate the gap between the cambered surface to constitute.
The barrel of said urceolus is provided with inlet suction port, is provided with the gas distribution chamber of annular between the outside wall surface of said core tube and the internal face of urceolus, the air inlet port of said inlet suction port of said gas distribution chamber conducting and said gas channel.
The outline of said core tube is the multidiameter shape with the path section that one in front and one in back is wholely set and big footpath section; The outside wall surface of the big footpath section of core tube and the internal face of urceolus are sealed and matched, and said gas channel is made up of the gap between the internal face of the outside wall surface of the path section of core tube and sleeve.
The outside wall surface of the internal face of said urceolus and core tube is sealed and matched, and said gas channel is made up of the coaxial annular groove that is opened on the said outer tube inner wall face.
Because said suction type aperture grit arrestor has described negative pressure generator and dust carrier pipe; Said drilling rod sleeve be threaded onto on the rear side tube wall of dust carrier pipe and with the coaxial setting of negative pressure generator; The front end face of the core tube of said negative pressure generator and said in be provided with gas channel between the trailing flank that turns edge; Said gas channel has air inlet port and is used for air-flow is sprayed onto the puff prot in the core tube backward, and the internal face of core tube is provided with the drainage face between the internal face of outside wall surface and dust carrier pipe that the air-flow that is used for the ejection of said puff prot causes the drilling rod sleeve, therefore; Can be connected with source of the gas through the air inlet port of said gas channel in use; Because jet action forms a negative pressuren zone at the front end place of negative pressure generator, dust enters into the dust carrier pipe by the adsorption effect of action of negative pressure and air-flow, at this moment; Because the adsorption effect of air-flow attaches the wall air-flow at core tube inwall formation one deck of negative pressure generator; And the axle central area in negative pressure generator core tube forms an air-flow blind area, and drilling rod just passes from this blind area, thereby makes the dust that is entrained in the air-flow avoid drilling rod; Realize cooperation place dustproof of aperture grit arrestor and drilling rod, solved the problem of sealing effectiveness difference that is used to supply the position that drilling rod penetrates of existing aperture grit arrestor.
Description of drawings
Fig. 1 is the structural representation of the embodiment 1 of suction type aperture grit arrestor;
Fig. 2 is the structural representation of the urceolus among Fig. 1;
Fig. 3 is the structural representation of the core tube among Fig. 1.
The specific embodiment
The embodiment 1 of suction type aperture grit arrestor shown in Fig. 1-3, is made up of the control of dust deslagging cover 1, negative pressure generator 2 and the dust carrier pipe 3 that are tightly connected successively backward in the past.
Control of dust deslagging cover 1 is pre-large post-small infundibulate, and its rear end is provided with the flange that turns up and passes through its flange and is connected with negative pressure generator 2; Negative pressure generator 2 is made up of core tube 2.1 and the coaxial urceolus 2.2 that is sheathed on the core tube 2.1; The outline of core tube 2.1 is multidiameter shape; Have the path section of front end and the big footpath section that one is adjacent to said path section rear end; The outside wall surface of the big footpath section of core tube 2.1 is provided with external screw thread and is equipped with locking nut 4; Turn edge in the front end of urceolus 2.2 has and with control of dust deslagging cover 1 between flange be connected; The barrel of urceolus 2.2 is provided with and is used for the inlet suction port 2.2-1 that is connected with source of the gas, urceolus 2.2 screw fit on core tube 2.1 and through locking nut 4 lockings, thereby realize being sealed and matched between the internal face of outside wall surface and urceolus 2.2 of big footpath section of core tube 2.1; Meanwhile; Constitute the gas distribution chamber 2.3 that communicates with inlet suction port 2.2-1 between the outside wall surface of the path section of core tube 2.1 and the internal face of urceolus 2.2, matched in clearance between the trailing flank that turns edge in the front end of core tube 2.1 and the urceolus 2.2, the gap between the two forms a gas channel; Gas channel has the air inlet port that communicates with gas distribution chamber 2.3 and is used for the air-flow that gets into from air inlet port is sprayed into outlet section and puff prot in the core tube backward; The front end face of core tube 2.1 is to be used for the air-flow from the ejection of the puff prot of gas channel is caused the drainage cambered surface 2.1-1 on the internal face of core tube 2.1, and the trailing flank that turns edge on the urceolus 2.2 is provided with the drainage cambered surface 2.1-1 profile of core tube is coincide and cooperates cambered surface, and described gas channel then is by drainage cambered surface 2.1-1 and cooperates the gap between the cambered surface to constitute; In addition, on the urceolus 2.2 in the leading flank that turns edge be provided with the inclined-plane and the internal face through this inclined-plane and control of dust deslagging cover 1 seamlessly transits adjacency; The rear end of core tube 2.1 is connected with an end flanges of dust carrier pipe 3, has the setting angle between the axis of the center line of the port of the other end of dust carrier pipe 3 and negative pressure generator 2, and promptly dust carrier pipe 3 is a bend pipe; In the present embodiment, this setting angle is 90 degree, certainly; In other embodiments; This setting angle be the 30-90 degree all can, in addition, dust carrier pipe 3 is provided with away from an end of negative pressure generator and is used for the dust discharge joint 3-1 that is connected with dust arrester; Be integrally formed with the drilling rod sleeve 5 that supplies drilling rod 7 to pass on the rear wall of dust carrier pipe 3; The two ends of drilling rod sleeve 5 lay respectively at inside and outside both sides and the drilling rod sleeve 5 and negative pressure generator 2 coaxial settings of dust carrier pipe 3 rear walls; The internal face of core tube 2.1 is provided with the drainage face 3-2 in the gap between the internal face of outside wall surface and dust carrier pipe 3 that the air-flow that is used for the ejection of the puff prot of gas channel causes drilling rod sleeve 5, and this drainage face 3-2 is cambered surface and makes the endoporus of core tube form pre-small post-large bellmouth orifice; The core tube seamlessly transits adjacency through the internal face of drainage face and dust carrier pipe 3 simultaneously, and the air-flow of the puff prot ejection of gas channel formed before the drilling rod sleeve attaches the wall air-flow, continues then by the drainage of drainage face.All coaxial fire-retardant cover 6, these the fire-retardant cover 6 employing jacket casings of being equipped with in the place, two ends of drilling rod sleeve 5.
During use; At first be fixed on rig front end (also can be fixed on the rib) to this suction type aperture grit arrestor, drilling rod passes from said drilling rod sleeve, can be according to the actual conditions adjustment control of dust deslagging cover in when boring and the distance between the rib; The dust that produces in the boring procedure enters into said dust gathering arrester after boring is come out; Oarse-grained dust falls along the dust gathering arrester inwall, and thin dust enters into the dust carrier pipe by the adsorption effect of action of negative pressure and air-flow, enters into corresponding dust arrester through the dust carrier pipe again; Dust arrester can adopt cloth-bag type or water tank, thereby makes the dust of collecting (main component is a coal) and to utilize by centralized collection.
In other embodiment of suction type aperture grit arrestor, the drainage cambered surface described in the embodiment 1 of suction type aperture grit arrestor can also be the drainage inclined-plane; Described control of dust deslagging cover can also be established in use in addition; Described gas distribution chamber can also be processed through the coaxial annular groove of offering on the internal face of urceolus; Described drilling rod sleeve can also be made separately, is threaded onto then on the dust carrier pipe and is connected through mode such as welding and dust carrier pipe; Described core tube and urceolus can also be made as one, then the gas channel of processing correspondence above that.
Claims (10)
1. suction type aperture grit arrestor; It is characterized in that; Comprise negative pressure generator and have the dust carrier pipe of drilling rod sleeve; Said negative pressure generator comprises core tube and the coaxial peripheral urceolus of said core tube that is located in; One end of said dust carrier pipe is sealedly attached to the rear end of said core tube or urceolus; Have the setting angle between the axis of the center line of the other end and drilling rod sleeve, said drilling rod sleeve be threaded onto on the rear side tube wall of dust carrier pipe and with the coaxial setting of core tube of negative pressure generator, the outside wall surface of drilling rod sleeve and dust carrier pipe are sealed and matched; In having, the front end of urceolus turns edge; The front end face of core tube and said in be provided with gas channel between the trailing flank that turns edge, said gas channel has air inlet port and with being used for air-flow is sprayed onto in the core tube backward and makes the gas of ejection before arriving the drilling rod sleeve, form outlet section and the puff prot that attaches the wall air-flow, the internal face of core tube is provided with the drainage face between the internal face of outside wall surface and dust carrier pipe that the air-flow that is used for said puff prot ejection causes the drilling rod sleeve.
2. suction type according to claim 1 aperture grit arrestor is characterized in that the front end of said negative pressure generator is fixed with control of dust deslagging cover, and said control of dust deslagging cover is pre-large post-small infundibulate.
3. suction type according to claim 1 aperture grit arrestor; It is characterized in that; The adjoiner of the internal face of the internal face of said core tube and dust carrier pipe seamlessly transits, and the endoporus of core tube is pre-small post-large bellmouth orifice, and said drainage face is formed by the hole wall of said bellmouth orifice.
4. suction type according to claim 1 aperture grit arrestor is characterized in that described urceolus screw fit is on described core tube.
5. suction type according to claim 1 aperture grit arrestor is characterized in that, said dust carrier pipe is provided with away from an end of said negative pressure generator and is used for the dust discharge joint that is connected with dust arrester.
6. suction type according to claim 1 aperture grit arrestor is characterized in that, coaxially in the said drilling rod sleeve is equipped with fire-retardant cover.
7. suction type according to claim 1 aperture grit arrestor; It is characterized in that; The front end of said core tube is provided with and is used for the air-flow that sprays in the said gas channel is caused the drainage cambered surface on the core tube internal face; Turning edge in said is provided with the cambered surface that cooperates of and matched in clearance identical with said drainage cambered surface, and described gas channel is by said drainage cambered surface and cooperate the gap between the cambered surface to constitute.
8. according to each described suction type aperture grit arrestor of claim 1-7; It is characterized in that; The barrel of said urceolus is provided with inlet suction port; Be provided with the gas distribution chamber of annular between the outside wall surface of said core tube and the internal face of urceolus, the air inlet port of said inlet suction port of said gas distribution chamber conducting and said gas channel.
9. suction type according to claim 8 aperture grit arrestor; It is characterized in that; The outline of said core tube is the multidiameter shape with the path section that one in front and one in back is wholely set and big footpath section; The outside wall surface of the big footpath section of core tube and the internal face of urceolus are sealed and matched, and said gas channel is made up of the gap between the internal face of the outside wall surface of the path section of core tube and sleeve.
10. suction type according to claim 8 aperture grit arrestor is characterized in that the outside wall surface of the internal face of said urceolus and core tube is sealed and matched, and said gas channel is made up of the coaxial annular groove that is opened on the said outer tube inner wall face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120488908 CN202325625U (en) | 2011-11-30 | 2011-11-30 | Negative-pressure type drilling hole dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120488908 CN202325625U (en) | 2011-11-30 | 2011-11-30 | Negative-pressure type drilling hole dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325625U true CN202325625U (en) | 2012-07-11 |
Family
ID=46437607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120488908 Withdrawn - After Issue CN202325625U (en) | 2011-11-30 | 2011-11-30 | Negative-pressure type drilling hole dust catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325625U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400703A (en) * | 2011-11-30 | 2012-04-04 | 郑州光力科技股份有限公司 | Negative-pressure type orifice dust catcher |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
-
2011
- 2011-11-30 CN CN 201120488908 patent/CN202325625U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400703A (en) * | 2011-11-30 | 2012-04-04 | 郑州光力科技股份有限公司 | Negative-pressure type orifice dust catcher |
| CN102400703B (en) * | 2011-11-30 | 2014-12-03 | 郑州光力科技股份有限公司 | Negative-pressure type orifice dust catcher |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
| CN117432461B (en) * | 2023-12-15 | 2024-03-19 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20141203 |
|
| RGAV | Abandon patent right to avoid regrant |